Free money and restrictive limit

Hi,
I made account in Coral via PS and I got free 10$. With this money I generated more then 50$ rake on ultra micro limits (sng & mtt max bi 1$ and NL2) . If I want to registr to higher MTT (buyin 2$) there is announcement, for unlock higher limits you have to make deposit 10$..OR generate 20$ in rake. And If I try to ask support, they told me I have to ask in PS, because this promotions is from PS...so, can anybody help me unlock higher limits?
Thank you